<FONT face="Verdana">RVA Profile Properties for  Cold Tolerant and  Sensitive Cultivars  of Japonica Rice at  Different Altitudes in Highland Region<BR></FONT>

ZHU  Zhenhua,KIM  Kiyoung,YUAN  Pingrong,ZHAO  Guozhen,SU  Zhenxi,SHI  Rong,ZOU  Qian,YANG  Seajun,DAI  Luyuan

doi:10.3969/j.issn.1001-7216.2010.02.08

2010 , Vol. 24 >Issue 2: 151 - 156

DOI: https://doi.org/10.3969/j.issn.1001-7216.2010.02.08

研究报告

RVA Profile Properties for Cold Tolerant and Sensitive Cultivars of Japonica Rice at Different Altitudes in Highland Region

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1 Japonica Rice Breeding Center, Yunnan Academy of Agricultural Sciences, Kunming 650205, China; 2 Honam Agricultural Research Institute, National Institute of Crop Science, Rural Development Administration, Iksan 570-080, Korea; 3National Institute of Crop Science, Rural Development Administration, Suwon 441-857, Korea; *Corresponding author, E-mail：Luyuandai@yahoo.com.cn

Received date: 1900-01-01

Revised date: 1900-01-01

Online published: 2010-03-10

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Abstract

Four coldtolerant and five coldsensitive japonica rice cultivars were grown at three locations with different altitudes in Yunnan plateau to investigate rice starch RVA profile characteristics. The results showed that with increasing altitude, the setback viscosity in coldsensitive cultivars increased significantly, while the peak viscosity and breakdown viscosity decreased significantly. However, the peak viscosity and breakdown viscosity in coldtolerant cultivars initially decreased and then gradually increased with rising altitude, whereas the setback viscosity initially increased and then decreased. The starch RVA parameters of coldtolerant cultivars was less sensitive to different environments than those of coldsensitive cultivars. Cooking and eating quality of coldtolerant cultivars had relatively stable trends with rising altitude, whereas cooking and eating quality of coldsensitive cultivars had a trend toward inferior.

Key words： japonica rice; cold tolerance; rice quality; starch viscosity; altitude

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ZHU Zhenhua,KIM Kiyoung,YUAN Pingrong,ZHAO Guozhen,SU Zhenxi,SHI Rong,ZOU Qian,YANG Seajun,DAI Luyuan . RVA Profile Properties for Cold Tolerant and Sensitive Cultivars of Japonica Rice at Different Altitudes in Highland Region
[J]. Chinese Journal OF Rice Science, 2010 , 24(2) : 151 -156 . DOI: 10.3969/j.issn.1001-7216.2010.02.08

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